SOLUTION: The length of a rectangle exceeds its breadth by 7 ems. If the length is decreased by 4 cm. and the breadth is increased by 3 cms., then the area of the new rectangle will be the s
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Question 813515: The length of a rectangle exceeds its breadth by 7 ems. If the length is decreased by 4 cm. and the breadth is increased by 3 cms., then the area of the new rectangle will be the same as the area of the original rectangle. What will be the perimeter of the original rectangle?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
x length, y breadth.
x=y+7.
Area initially is . Perimeter would be .
New situation.
x-4, length, and y+3, breadth. Remember, x=y+7 and means y=x-7.
Area now .
Perimeter now is .
AREA OF NEW AND INITIAL ARE EQUAL.----Given.
That means .
Question asked was, original perimeter.
cms.
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